diff --git a/scripts/ci-diff-benchmark-go.sh b/scripts/ci-diff-benchmark-go.sh
index 3a24428c5..9a9209b52 100755
--- a/scripts/ci-diff-benchmark-go.sh
+++ b/scripts/ci-diff-benchmark-go.sh
@@ -8,7 +8,7 @@ git reset --hard FETCH_HEAD
 
 make benchmark-go | tee master.txt
 
-git reset --hard origin ${TRAVIS_PULL_REQUEST_BRANCH}
+git reset --hard ${TRAVIS_PULL_REQUEST_SHA}
 make benchmark-go | tee new.txt
 
 make benchmark-compare-go | tee benchstat.txt
diff --git a/scripts/ci-diff-webpack.sh b/scripts/ci-diff-webpack.sh
index 33f8ebc22..0c1dc59cf 100755
--- a/scripts/ci-diff-webpack.sh
+++ b/scripts/ci-diff-webpack.sh
@@ -10,7 +10,7 @@ make -C ui build/stats.json
 mv ui/build/stats.json master.json
 
 make clean
-git reset --hard origin ${TRAVIS_PULL_REQUEST_BRANCH}
+git reset --hard ${TRAVIS_PULL_REQUEST_SHA}
 make -C ui build/stats.json
 
 ./scripts/cra-bundle-stats-diff.py master.json ui/build/stats.json | tee diff.html